1) Early Cretaceous bird of Asia 
Yumenornis is an extinct genus of basal ornithuromorph dinosaur known from the Early Cretaceous Xiagou Formation of Changma Basin, Gansu Province of northwestern China. Yumenornis was first named by Ya-Ming Wang, Jingmai K. O`Connor, Da-Qing Li and Hai-Lu You in 2013 and the type species is Yumenornis huangi. ...